diff --git a/.github/workflows/gh-deploy.yml b/.github/workflows/gh-deploy.yml
index 5a64dfc..b9236fe 100644
--- a/.github/workflows/gh-deploy.yml
+++ b/.github/workflows/gh-deploy.yml
@@ -19,5 +19,6 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CONFIG_FILE: mkdocs.yml
+          CUSTOM_DOMAIN: docs.lightningdb.io
           EXTRA_PACKAGES: build-base
           REQUIREMENTS: requirements.txt